基于改进主成分分析法的城市交通管理规划方案评价

Evaluation for Urban Traffic Management Planning on Improved Principal Component Analysis Method

鉴于主成分分析法中某一方面的评价指标多寡、相关性强弱对结果有着显著的影响,本文在进行城市交通管理规划方案评价时,首先将评价指标划分为不同的指标子集,利用主成分分析法得到每一指标子集的评价值;再给各指标子集分配相应的权重系数,以线性加权求和的方式得到城市交通管理规划方案的综合评价值.并在实例中讨论了各指标子集的权重取值对评价结果的影响.该方法有助于融合主客观赋权法的优点,克服常用方法中存在的不足.

Because in the component analysis method, the number and relativity of indexes belonging to a certain aspect has a remarkable disadvantageous impact on the result, when the comprehensive evaluation for urban traffic management planning is made, firstly all the indexes are divided into different index subset, and using the principal component analysis method, the value of each index subset is gained. And then, the corresponding power coefficient is allotted to each index subset. At last, the comprehensive evaluative value of urban traffic management planning is gained by means of the linear power adding. In an example, the impact of power to the result is discussed. The method effectively combines the virtue of subjective and objective methods to determine power, and overcomes the defects in the common methods.